Type wheel for hand stamps



c. SPIELMAN v TYPE WHEEL FOR HAND STAMPS Filed May '7. 1925 INVENTOR NEY Patented Nov. 17, 1925.

UNITED STATES.

PATENT OFFICE.

CHARLES SPIELMAN, OF NEW YORK, N. Y., ASSIG-NOR T WM. A. FORCE & COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

TYPE WHEEL FOB, HAND STAMPS.

Application filed May 7, 1925. Serial No. 28,676.

To all whom it may concern:

Be it known that I, CHARLES SPIELMAN,

a citizen of the United States, residing at QueensBorough, New York city, in the county of Queens and State of New York,

have invented certain new and useful Improvements in Type Wheels for Hand Stamps, of which'the following is a specification.

My invention relates to type wheels for hand stamps, such as numbering or dating machines, and it is my object to produce a type wheel of brass, or other suitable material, to which a steel or other harder metal ratchet wheel, provided with an integral spline is rigidly attached.

Heretofore the spline has been formed in the center hole of the type wheel itself and this is not only an expensive and troublesome operation but the presence of the spline in the hole seriously interferes with the subsequent operations on the sides and face of the type wheel, a plain, cylindrical, center hole being more easily handled in the engraving and finishing machines and factory operations.

In the drawing Fig. l is a perspective view of a wheel on a shaft; Fig. 2 a crosssectional view of the wheel and shaft end; Fig. 3 a face view of the assembled wheel; Fig. 4 a View of the shaft end; and Fig. 5 a view of the ratchet wheel.

In its preferred form my improved type wheel is formed of a body 1 having the numerals or other symbols engraved on its outer face 2. The center hole 3 is cylindrical, as shown, and a small flange 4 is formed around the hole on one face thereof, which flange is provided with a 40 notch 5.

A thin ratchet wheel 6, preferably stamped from a sheet of steel or other suitable material, is formed with a spline 7 formed in its center hole 8. p

The steel ratchet a wheel "is then forced onto the flange 4 with the spline 7 entering, and extending through, the notch 5, after which the edge of the flange is spread to rivet the ratchet wheel to the type wheel proper.

.and a ratchet wheel provided with a corre- The united type and ratchet wheels are then pushed onto a shaft 9, provided with.

a groove or notch 10 into which the spline 7 extends so that the type wheel and shaft will revolve together. In some cases it may be desirable to secure the ratchet wheel to the type wheel by separate rivets 11 instead. of by means of the flange 4. The flange connection is especially useful where the ratchet wheel is small in comparison with the shaft diameter.

My invention consists primarily in forming a type wheel of softer metal with a plain, cylindrical center hole and securing thereto a ratchet wheel of harder metal, also provided with a center hole, which latter center hole has an integral spline adapted to engage a notch or groove on a shaft carrying the type wheel. By this construction I can use a non-corrodible metal for a printing wheel which can be easily and quickly engraved and a hard, strong metal for the ratchet wheel which moves the type wheel.

I claim w 1. A type wheel for hand stamps comprising a type wheel provided with printing symbols on its outer face and a cylindrical center hole, a ratchet wheel also rovidecl with a corresponding center ole which hole is provided with an integral spline adapted to enter and engage a groove in a shaft carrying the type wheel and means for securing the type and ratchet wheels together. p

2. A type wheel for hand stamps consisting of a type wheel provided with printing symbols on its outer face and a cylindrical center hole, a notched flange surrounding the center hole on .a side face of the wheel,

sponding center hole and a spline eXtend-.

ing inwardly from said hole, the ratchetwheel center hole engaging the type wheel flange withthe spline extending through the notch. I

In testimony whereof I'have aflixed my' signature. Y

CHARLES SPIELMAN. 

